Mon fichier log Xorg grossit

[Philippe Merlin <phil-deb1.merlin@laposte.net>]

Bonjour,
J'ai un sérieux problème que je soumets à liste qui j'espère pourra me donner 
des conseils ou une piste pour le

# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
	Identifier     "Default Layout"
	Screen      0  "aticonfig-Screen[0]" 0 0
	InputDevice    "Generic Keyboard"
	InputDevice    "Configured Mouse"
EndSection

Section "Files"
EndSection

Section "Module"
EndSection

Section "InputDevice"
	Identifier  "Generic Keyboard"
	Driver      "kbd"
	Option	    "CoreKeyboard"
	Option	    "XkbRules" "xorg"
	Option	    "XkbModel" "pc105"
	Option	    "XkbLayout" "fr"
EndSection

Section "InputDevice"
	Identifier  "Configured Mouse"
	Driver      "mouse"
	Option	    "CorePointer"
	Option	    "Device" "/dev/psaux"
	Option	    "Protocol" "ImPS/2"
EndSection

Section "Monitor"
	Identifier   "IISonic"
	HorizSync    30.0 - 100.0
	VertRefresh  50.0 - 160.0
	Option	    "DPMS"
EndSection

Section "Monitor"
	Identifier   "aticonfig-Monitor[0]"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Device"
	Identifier  "ATI HDI 2660 XT"
	Driver      "vesa"
	VideoRam    256
	BusID       "PCI:5:0:0"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[0]"
	Driver      "fglrx"
EndSection

Section "Screen"
	Identifier "Default Screen"
	Device     "ATI HDI 2660 XT"
	Monitor    "IISonic"
	DefaultDepth     24
	SubSection "Display"
		Modes    "1920x1200" "1856x1392" "1792x1344" "1680x1050" "1600x1200" "1440x900" "1400x1050" "1280x1024"
	EndSubSection
EndSection

Section "Screen"
	Identifier "aticonfig-Screen[0]"
	Device     "aticonfig-Device[0]"
	Monitor    "aticonfig-Monitor[0]"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection